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Finding the Fourth Proportional to 2,173.63, 3,260.44 and 613.67

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Solution

The fourth proportional to 2,173.63, 3,260.44 and 613.67 is: 920.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,173.63 : 3,260.44 = 613.67 : x
  2. Step 2: Convert to fraction form
    2,173.63/3,260.44 = 613.67/x
  3. Step 3: Cross multiply
    2,173.63x = 3,260.44 × 613.67
  4. Step 4: Simplify right side
    2,173.63x = 2,000,816.38
  5. Step 5: Solve for x
    x = 2,000,816.38/2,173.63
  6. Step 6: Final answer
    x = 920.50

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Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.